Novel resorcinol derivatives from Lasiodiplodia theobromae

Abstract

Two novel resorcinol derivatives were isolated from the mycelium of Lasiodiplodia theobromae IFO 31059 as potato micro-tuber inducing compounds. Their structures were established by spectroscopic methods as ethyl (6' R)-2,4-dihydroxy-6-(6'-hydroxyheptyl)benzoate (8) and isobutyl (6' R)-2,4-dihydroxy-6-(6'-hydroxyheptyl)benzoate (9). The absolute stereo-chemistry of the asymmetric center of (8) was determined by an advanced Mosher method.